Table 2 Clinical and radiographic outcomes of primary total hip arthroplasty in both direct anterior (DA) and direct lateral (DL) groups
Variables | DA group (N = 40) | DL group (N = 38) | P value |
|---|---|---|---|
Mean Operative time in minutes ± SD | 83 ± 17 | 93 ± 24 | 0.03 |
Mean Preoperative HOOS JR ± SD | 37.1 ± 13.4 | 41.4 ± 12.5 | 0.15 |
Mean 6 weeks postoperative HOOS JR ± SD | 63.9 ± 18.8 | 61.8 ± 15.6 | 0.6 |
Mean 6 months postoperative HOOS JR ± SD | 86 ± 11.6 | 85 ± 15.9 | 0.8 |
Mean inclination angle ± SD | 46.4 ± 7.1 | 42.6 ± 5.5 | 0.013 |
Number of outliers for cup inclination angle | 6(15%) | 3(8%) | 0.48 |
Mean anteversion angle ± SD | 18.1 ± 6.6 | 19.1 ± 6.3 | 0.4 |
Number of outliers for cup anteversion angle | 5(12%) | 6(15%) | 0.7 |
Mean leg length discrepancy (LLD) in millimeters (mm) ± SD | 3.2 ± 2.5 | 3.7 ± 2.8 | 0.3 |
Number of outliers in LLD (> 5 mm) | 3(7%) | 6(15%) | 0.2 |
Femoral stem alignment | Neutral:38 Varus: 2 | Neutral:37 Varus:1 | 0.1 |
Narcotics refill | 3 patients (7%) | 6 patients(15%) | 0.2 |
Required walking aids at one week post-surgery | 28 patients (70%) | 30 patients (78%) | 0.2 |
Required walking aids at 6 weeks post-surgery | 3 patients(7.5%) | 4 patients (10%) | 0.5 |
Length of hospital stay (less than 24 h/ more than 24 h) | 16(40%)/24(60%) | 13(34%)/25(66%) | 0.1 |